LSM303D datasheet(44/52 Pages) STMICROELECTRONICS

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LSM303D

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DocID023312 Rev 2

8.34

IG_CFG2 (34h)

This register contains the settings for the inertial interrupt generator 2.

Content of this register is loaded at boot.

Write operation at this address is possible only after system boot.

Difference between AOI-6D = ‘01’ and AOI-6D = ‘11’.

AOI-6D = ‘01’ is movement recognition. An interrupt is generated when the orientation

moves from an unknown zone to a known zone. The interrupt signal remains for a duration

ODR.

AOI-6D = ‘11’ is direction recognition. An interrupt is generated when the orientation is

inside a known zone. The interrupt signal remains until the orientation is inside the zone.

Table 71. IG_CFG2 register

AOI

ZHIE/

ZUPE

ZLIE/

ZDOWNE

YHIE/

YUPE

YLIE/

YDOWNE

XHIE/

XUPE

XLIE/

XDOWNE

Table 72. IG_CFG2 register description

AOI

And/Or combination of interrupt events. Default value: 0. Refer to Table 73

6-direction detection function enabled. Default value: 0. Refer to Table 73

ZHIE/

ZUPE

Enable interrupt generation on Z high event or on direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request)

ZLIE/

ZDOWNE

Enable interrupt generation on Z low event or on direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request)

YHIE/

YUPE

Enable interrupt generation on Y high event or on direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

YLIE/

YDOWNE

Enable interrupt generation on Y low event or on direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

XHIE/

XUPE

Enable interrupt generation on X high event or on direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

XLIE/

XDOWNE

Enable interrupt generation on X low event or on direction recognition. Default

value: 0 (0: disable interrupt request; 1: enable interrupt request.)

Table 73. Interrupt mode

AOI

Interrupt mode

OR combination of interrupt events

6-direction movement recognition

AND combination of interrupt events

6-direction position recognition

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